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Y Nov. 5, 1946.,n
R. H. STEVENS
2,410,555 -
OSCIL‘LATING ROTARY SHEAR
Filed June 22 .Y 1945
6 Sheets-Sheet 1
3
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äà?m'dSleI/ags:
Nov. 5, 1946.
R. H. STEVENS
2,410,555
OSCILLATING ROTARY SHEAR
`F‘iled June 22, 1945
MÍ.
,
`
6 Sheets-Sheet 2
Nov. 5, 1946.
R. H. STEVEN-S
2,410,555
OSCILLATING ROTARY SHEAÈ n
Filed June 22, 1945
e sheets-smet s
.\^È„à.w.ï
Nov. 5, 1946.
R. H. STEVENS '
2,410,555
OSCILLATING ROTARY SHEAR
Filed Junè 22. 1945
6 vSheets-Shed’l 4
NGV. 5, 1946.
R, H, STEVENS
2,410,555
OSCILLATING ROTARY SHEAR
Filed June 22, 1945
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14616.55?
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6 Sheets-Sheet 5
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Siévens..
Nov. 5, 1946.
R. H. STEVENS
2,410,555 '
OSCIILLATING ROTARY SHEAR
F'iledl June 22, 1945
6 Sheets-Sheet 6
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Patented Nov.
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N. _UNITE-D" vs'm'ri-:js - PATENT oFFlcl-z
@2,410,555
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“
OSCILLATING ROTARY SHEAR
Richard H. Stevens, Baltimore, Md., assignor to
Bethlehem Steel Company, a corporation of
Pennsylvania
Application June 22, 1945, Serial No. G01-.012
24 Clas.
(El. 164-68)
i
matically controlled mes are provided whereby
to increase the variationsin lengths of cuts per
missible in the machine as well as increase the4
This invention pertains to metal shearing ap- parafus, and more particularly to a rotary shear
for cutting metal sheets, strips, bars and the like
into sections of predetermined length while the
stock is in'motion.
On the present rotary shears there is only one -
length of cut at which the peripheral speed of
the knives corresponds. to the speed of the strip.
variations in the limits of its operation.
_
These and various other objects, as well as the
various other novel features and advantages of
_ the invention, will be apparent when the follow
This speed is usually for the maximum length of _
cut. On all shorter cuts the shear is sp'eeded up,
and consequently at the/time of cut there is a
'jerk on the strip> or like material. For instance,
if the strip is traveling 1600 feet lper minute and
the drum carrying the bottom knife is 42 inches
- in diameter and substantiallyll feet in circum
ing detailed description is read in conjunction
with the accompanying six sheets of drawings in
which like characters of reference indicate like `
parts.
-
Figure 1 is a plan view showing diagrammati
cally one form of Yan oscillating rotary shear con
structed` in accordance with my invention in
which a well known Waterbury control is used.
ference, at synchronous speed the- drum carrying
Fig. 2 is a vertical section of the rocker arm
the shear blade would be making >approximately
l600+11=145.5 R. P. M., and make 48.5 33-foot
taken
i Fig. on
3 is
thea line
vertical
2--2 longitudinal
of Fig,>
'section taken
on the line 3_3 of Fig. 1 and indicating the
cuts per minute. ' Now if the cut is 16.5 feet, the
number of cuts per minute=1600-z-16.5=97 cuts 20 approximate relative position of the mechanism
' per minute which corresponds to 97><3=291
R. P. M. of drum or twice as fast A_as for a 33
foot cut.
_
'
While there is an overrunning clutch between
at the completion of the cut.
-
Fig. 4 is a vertical section of the oscillating arm
taken on the line Si-ß of Fig. 3.
‘
Fig. 5 is a modiiication showing an oscillating
rotary shear having a double head shear,
the Waterbury drive and the shear, the inertia
Fig. 6 is a transverse section of the rocker arm
of the shear at this highl speed is enough to
shown in Fig. 5 taken on the line 6_6 of Fig. 5.»
stretch the hot strip during the time of cutting
Fig. 'I is a transverse section of the rocker arm
and reducing the gage in the rolls- which makes
taken
on the line ‘I-'l of Fig. 5.
Y
a very definitive mark on each plate sheared.'
If, however, the whole shear is advanced or 30 Fig. 8 illustrates diagrammatically a synchro
nized cutting rotary shear with a cutting range _
retarded at the differential speed between the
from 72", to 156" length cuts.
speed of the strip and the peripheral speed of
the drum, the cutting will always be done at a
Fig. 9 is a modification in which the crank arm -
and speed change gear are located adjacent to
35 the shear frame with an adjustable rod connect
ing the crank arm to the shear frame.
One of the objects of my invention is to provide.
Fig. 10 is a top plan view of the modiñcation
a rotary shear with means for varying the speed
shown in Fig. 9.
of the shears with respect to the speed of the
Fig. 11 shows another modification in which _
stock so that variations may be made in both
the lengths of the cuts and the speed of. operation 40 the speed change gear is mounted directly on
the oscillating sheary framel and driven by the
of the machine.
'
synchronous speed thus eliminating the jerk
while cutting.
. Another object of my invention is to provide
a rotating shear in which the cutting blades, in
addition to being rotated transversely of the
-stock for effecting the cuts, are also positively 45
' osclllated in the direction of the line of travel
of the stock, to cause the cutting blades to move
with the stock when the cut is made, and in which
the mechanism employed for producing such'
oscillations is designed to be adjusted in such a
way that the linear speed of the blades may be
synchronized with that of the stock at the in
stantoi’ cutting.
\
“It >is also an object of the invention to provide
a rotary shear in which manually as wellv as auto
shear drive.
-
>
Fig. 12 is a top plan view of the detail shown
in Fig. 11.
l
Fig. 13 shows another modiñcation in which
the oscillating rotary shears are mounted and
_supported on swinging arms.
Fig. 14 is a front elevation of the detail shown
in Fig. 13.
~
_
‘
Referring now to the‘various characters of
reference on the drawings and ñrst to Figs..l to
4, the numeral I_'indicates the 'base for the shear
. frame having a slideway 2r adapted «to receive and
support the oscillating shear frame 3 in which the ~
top and bottom rotary shear drums 4 and 5 re
c
3
2,410,555
spectively are mounted and geared together as
at 6. The rotary shear drums are connected by
means of a vibrating spindle 1 to a shaft 8 hav
ing a gear 9 mounted thereon meshing with pin
ions I0 and Il on motor shafts |2 and I3 ot the
driving motors |4 and I5.
In some of the control systems now in use the '
rotary shears are mounted in a stationary hous
ing and interconnected with the finishing roll
The threaded shaft ss has a nut sa thereon with
a cylindrical extension 64 to which the opposite
end of the rod ‘53 to that connected to the rocker ~
arm 42 is pivoted and is further provided with
oppositely disposed trunnions 65 for pivoting the
ends of a pair of pltman rods 86 thereto. 'I'he
opposite ends of said pitman rods being pivoted
to the shear frame 3 as at 61.
In this arrangement the motors 49 and 62 are
stand from which strip or the like is delivered to 10 synchronized with the setting motor for the
the shear so that the relative speeds bear a fixed
Waterbury drive and the strip 68 is advanced
relation to one another. Provision is made for
from the finishing rolls 24 in the direction of the
adjusting this relation so as to .correspondingly
arrow as indicated in Fig. 3 between the shear
adjust the length of the cut. This ls accom
drums 4 and 5 and after the shearing operation
plished by means of a ñuid pump and a hydrauli
between pinch rolls 69 to a receiving table 18.
cally connected fluid motor of the well-known
When the idea is applied to other rotary shears '
Waterbury type.
In this form of my invention therctating speed
is manipulated for- shearing varying lengths of
strip by a Waterbury hydraulic control and the
lever connections for the oscillating movement »
'of shear is arranged to match the speed set by the -
Waterbury control. To accomplish this the shaft
where the speed is set by hand before starting to
out the levers for giving the oscillating movement
of the rotary shears will be set by hand also thus
simplifying the lever arrangement. On this type
of shear there is a. speed change gear which is
set by hand for the particular length cut required,
and the location of the connecting rod and crank
8 is connected by means of an overrunning clutch
arm are set by hand to the same mark thus giving
i6 to the hydraulic motor I1 which is connected
the proper oscillation of .the shears for that out.
by fluid conductors I8 to a hydraulic pump i9
Referring now to Figs. 5 to l2, inclusive, Fig.
having a shaft 28 provided with a gear 2| mesh
5 shows a double head shear for increased range
ing with a gear 22 on shaft 23 extending to the
without increasing the rotary speed, the cutting
finishing rolls 24 and driven by a motor 25. The
lengths being as indicated from 14" to 40".
hydraulic motor I1 and the pump I9 are of the 30 With this- device both shear heads are used for
well-known Waterbury type and run always in a
cutting lengths of strip from 14" to 20" and the
definite speed relationship to one another.
adjustable head on the left is omitted when `cut
This will be more clearly understood by re
ting lengths 20" to 40".
ferring to the Iverson Patent No. 2,085,981, but as
If two heads are cutting then the adjustable
this type of control is well. known in this art a
head is also set at half that distance thus in,
detailed description of the same is not believed
creasing the range of cutting, as indicated in this
necessary.
' particular case, from 14" to 40".
In order to control the oscillating movement
In this construction shown in Fig. 5, 1| in
of the rotating shears the shaft 8 has a spur gear
dicates the base having a slideway 12 for receiv
26 mounted thereon meshing 'with a similar gear 40 ing and supporting a pair of shear frames or
21 on a stub shaft 28 provided at its outer endÍ
heads 13 and 14, each provided with a pairV of
with a bevel gear 29 meshing with a bevel gear
shear drums 15, 18 and 11, 18, respectively,
30 mounted on one end of a shaft 3|, having at
mounted thereon.
its opposite end a bevel gear 32 meshing with a
The shear frames 13 and 14 are connected to
bevel gear 33 on one end of shaft 34 provide’d at . gether at their bases by means of a rod 19 which
~its opposite end portion with a spur gear 35 which
is threaded at one end as. at 80 to engage a nut
-meshes with a, gear 36 on crank shaft 31 provided
8| secured toy the lower surface of the shear
with a pair of cranks 38 which are pivoted at one
frame 13. The rod 19 is provided with a ñange 82
end as at 39 to connecting links 40 that have
and a nut 83 by means of which the rod is clamp
their opposite ends pivoted to trunnion projec 50 ed in iixed relation to the shear frame 14, and
tions 4| extending from a rocker arm 42 pivoted
said rod 19 is further provided with a squared
for swinging movement as at 43. This rocker
end 84 for receiving a wrench or the like for ro
arm 42 is provided with a threaded shaft 44 hav
tating the same for adjusting the shear frame
ing a >pinion 45 keyed to its lower end which
18, in relation to the shear frame 14. As shown
meshes with a pinion 46 keyed to a bevel gear 41 55 in full lines in this figure the shear frames 13
and mounted on a. stub shaft extension 48 at the
and 14 are indicated in the position they assume
lower end of the rocker arm.
in cutting 14" lengths. When it is desired to
A motor 49 is mounted on the lower end of the I cut 20" lengths the shear frame 13 is adjusted
rocker arm 42 having its shaft provided with a
by rotating the rod 19 to the position shown in
bevel gear 58 meshing with the bevel gear 41 for 00 dotted lines,„or if it is desired to cut a length be
rotating the threaded shaft 44 through the pin
tween 14" and 20" the shear frame 13 may be
ions 45 and 46. 'I‘he threaded shaft 44 is further
adjusted between these two positions.v If it is
`provided with a nut 5| having a cylindrical ex
desired-to cut llengths -between 20" and 40" the
tension 52 to which one end of a rod 53 connect
shear frame 13 is removed and the adjustment is
ing the oscillating arm 54 is pivoted.
65 made on the rocker arm.
'
The oscillating arm 54 is pivoted for swinging
For oscillating the shear frames 13 and 14 the
movement asat 55 and is constructed in a similar
shear frame 14 is provided with a downwardly
manner to that of .the rocker arm 42, except that
extending ñange 85 to which one end of vthe rod
the gearing and motor are mounted on the top of
86 is pivoted as at 81, the opposite end of said rod
the arm instead of at the bottom comprising ‘a 70 being pivoted to a studV shaft extension 88 of a
threaded shaft 56 with a pinion 51 keyed to its
nut 89 on a threaded shaft 90 journaled in a
upper end meshing with a pinion 58 keyed to a.
rocker arm 9|, pivotally ’mounted as at 92 for
-bevel gear 59 mounted on a stub shaft extension
swinging movement. The rocker arm 9| has a
~ 80 of the oscillating arm 54 and rotated by means
projecting ear 93 adjacent to its upper end
of la bevel gear 6I on the shaft of a motor 62. 75 adapted for pivoting as at 94 to one end of a
J'
2,410,555
5
pitman 95, the opposite end of which is pivoted
‘asatßßtoacrankarmsl having a shaft 98.
The peripheral speed of the drum |01, at 46.15
cuts per minute will be 5261" per minute, and the
'This crank arm 91 is. connected with and is
adapted tov be driven at the same speed as the
diii'erential
shear drums.
5261"-7200" or --1939".
»
‘
The threaded shaft 90 is provided `with a
squared end 98 for receiving a wrench or the like
for rotating the same to adjust the nut 89 and the
connecting rod 88. .
` ,/
-
backward speed
will- then be
a
If the rotating crank ||0 revolves at the rate
of one revolution per Tout, then at 100 cuts per
minute the travel of the crank at each revolution~
¢ will be
'
-
When two shear frames are used as indicated,
’
4200"
the knives on the shear drums of shear frame at
l
10o
the right are disposed 5° ahead of the knivesy on ~
the shear drums on the shear frame at the left so
or 42", circumference or 13.4”, diameter, giving
that each set of knives are cutting while the speed
6.7", as the radius or length of the crank.
of the strip |00 is under control of the roller
leveler |0| preceding the shear. Pairs of pinch 151,J AtA 46.15 cuts per, minute, the crank travel will
rolls |02 and |03 are located adjacent t0 opposite
sides of the shear head l0 «operating at strip speed
939’ ’
e
‘ for
Y supporting and advancing the cut lengths of
46. 15
strip to the conveyor mit and thence to a piler.
Fig. 8 illustrates >diagrammatically a syn
or 42", with thus the same crank radius.~
chronous cutting rotary shear for cutting lengths
in which the crank and speed change gear are '
shear always cuts when the shear knives and
|09 is also connected in a similar manner as in
located adjacent to the shear frame with a rod
connecting the crank arm withy the shear frame,
lin which H2 indicates the base having a slideWay
H3 for the -shear frame or head ||4
ing the shear drums H5 and H6 geared together .
as at Hl.
,
q
dicated in this ñgure to a rotating crank arm H0
by means of a pitman e | | i.
.~
Figs. 9 and 10 illustrate another modification
’ of strip ranging from '72" to 156" in which the
strip are in synchronism. In this diagram |05
indicates the shear frame for the shear drums
H00 and |01. A connecting rod |08 is pivoted at
one end to the shear frame i 05 and its opposite
end is'adjustably' pivoted to a rocker arm |09 in
the manner indicated in Fig. 5. 'I'he rocker arm
,
.
As an example for this diagram, assuming a
normal strip speed of 600' or 7200" per minute
and a range of cuts from 72" to 156" being de
sired, the mean cut at synchronous speed will
then be
The shaft for the lower shear drum ||6 at one
end extends outwardly as at || 8 and is coupled
I9, the opposite
The motor shaft |20 has a lbevel gear |22 keyed
thereto meshing with a bevel gear |23 on a shaft
|20 which has a gear |25 thereon meshing with
a gear |26 on the crank shaft |3|.
of the `shear frame H4 is provided centrally with
0r 114".
With two revolutions of the lower shear drum y
§07 per cut, this drum will be
114”
2
»or 57",*1'11 circumference or 18.15”
and the top shear drum |06 will be
bearings §30 Iextending from a disk |36 mounted
on the crank shaft |3| which is journaled in a
'in diameter, .
A ñxed pedestal support |37 and provided with a
2
scale thereon ranging from 75"
äX 18.15”
or 12.1" in diameter.
50 worm wheel has a
-
as set/'for 75" cuts.
-
lengths ranging from 75"
For the shortest length of cut 72", there will
then be
l
_or the like is applied to
`
55
7200”
72
630 is moved to the desired length cut indicated
on the scale.
„
. or 100 outs per minute, at the maximum drum '
The worm wheel E32 is driven from the shear
speed of 200 R, P. M. For the longest cut 156",
drive and aty the same speed and is mounted
there will be
@0
7200”
gn
the ~crank drive and changes
the relative posi
ion 0i’
‘
156’ ’
the correct speed. n
or 46.15 cuts per minute,- at the maximum drum
In Figs. 11 and 12 I have shown another modi
speed of 92.30 R. P. M. At'mean cut 114”, there 65
ñcation in which the worm is mounted on a gear
will be
~ driven by a gear
on the lower drum shaft and
adapted to oscillate with the shear frame or head
7200"
114”
or 63.15 cuts per minute, the mean rotary syn
chronous speed of the drum'being 126.30 R. P. M.
At 100 cuts per minute the peripheral speed of
the drum i0? will be 11,400" per minute, and the
differential forward speed will be 11,400"---7200"
or +4200".
'
v
'
of the shear the end
shear drum extends.
2,410,655
tinuously' moving strip material into lengths, up-`
outwardly as at >mi and has meer 14s-keyed ' per and lower cooperating shear drums mounted
thereto which meshes withy a gear |50 of the ,A for reciprocation with the -strlp material each
same size or radius provided with a scale with Y
a cutting range -frgm '15"> to 150" and mounted 5
for adjustment on a shaft |5| which is ,iournaled
in bearings |52 on Vthe shear frame |42. The'
gear |50 has a pair of extending bearings |53»
having a cutting blade thereon,` means for rotat
ing the shear drums, ya rotatlngcrank arm.`
means for continuously rotating the crank arm,
and an adjustable connection between the crank
arm and the drive for the> rotating shear drums
formed integral therewith in which is iournaled
for varying and
the speeds of re
the shaft |54- of a worm |55 meshing with a 10 ciprocation of the rotating shear drums with the
worm wheel |55 mounted on the shalt |5| and
strip material for various length cuts.
_ -
keyed to a crank arm. |51. 'I‘he crank arm |51
'is pivoted as at |58 to one end of a connecting
_ ` _4. A rotary oscillating shear adapted to cut
moving strip material into lengths, comprising> a
_reciprocating shear frame, a pair of cooperatingl
rod |59, said rod having its opposite end pivoted
as at |6|| to an anchor bracket ||ì|. The worm 15 rotary shear drums each having abutting blade `
gear vis providedwith a pointer |52. The rela
tion of the crank arm |51 to the shear knives
as shown in Fig. 11 is for making 15G" cuts.
~ thereon mounted in the shear frame, means for
rotating the shear drums, a rotating crank arm _ _
for reciprocating the shear frame, an adjustable
connection between the rotating crankvarm 'and
By applying e. wrench to the extending squared
end |53 of the worm shaft |54 the position can 20 the shear frame, and means for rotating the Y
be shifted with the worm |55 to intermediate
crank arm the same speed as the shear drums.
pointsasindicated for cuts desired.
` '
'
5. A rotary oscillating shear adapted to'cut
In Figs. 13 and 14, I have illustrated an os
moving strip material into lengths, comprising a
cillating rotary shear having the shafts of the _ reciprocating shear fra e, a pair of cooperating
rotating drums journaled in swinging arms in 25 rotary shear drums each having a cutting blade
` stead of a reciprocating shear frame in which
thereon mounted in the shear frame, means for
|54 indicates the base frame provided with bear
rotating the shear drums, a crank arm 'rotated
ings |65 for a drive shaft |66 which extends
'through the drive for the shear drums, a con
through the lower ends of spaced swinging side
nection between the crank arm and the recipro
arms |61 and Hit-having a gear |59 mounted 30 eating shear frame, and means in the connec
thereon for rotating the top and bottom shear
tion adapted to rotate the crank arm the same
drums |10 and |1| through the gear |12 and
speed as the sheardrums during the reciproca
|13, respectively. The pivoted swinging side
tion of the shear frame.
arms |51 and |58 are provided centrally with
6. A rotary oscillating shear adapted to cutV
ears |14 and |15 to which the ends of a pair 35 moving, strip material into lengths, comprising a
of rods |15 and |11 are pivoted as at |18. The
reciprocating shear frame, a pair of cooperating
connecting rods are adapted to extend to con
rotary shear drums each having a cutting blade
trolling means and assuming the strip speed is
thereon mounted in the shear frame, means for
600 feet _per minute and the cutting range ‘12"
rotating the shear drums, a crank arm mounted
to 156" the description of Fig. 8 would apply' 404 adjacent to the shear frame and rotated -by the
in a similar manner to this modiñcation.
drive for the shear drums for reciprocating the
_Although I have shown `and described my in
shear frame, and an adjustable connection be
vention in considerable detail, I do not wish to
tween the crank arm and the shear frame for
be limited to the exact construction shown and
varying the speed of the reciprocating shear
described, i`put may‘use such substitutions, modi
ncations or equivalents thereof, as are _embraced
- frame and the rotary shear drums to synchronize
their speed with the speed of the strip for various
within the scope or my invention, or as pointed
out in the claims.
length cuts.
'
_ .
'1.«A rotary oscillating shear adapted to cut
moving strip material into lengths, comprising a
claim as new and desire’to‘ secure by »Letters ' 50 reciprocating shear frame, a pair of cooperating
Having thus described'my invention, what I
rotary shear drums having cutting blades thereon ,
' mounted in the shear frame, a crank arm mount
Patent is:
_
1. In a rotary shear adapted
to cut moving
strip material into lengths, a pair o!> cooperating
ed adjacent to the shear frame rotated through
shear drums mounted for reciprocation with the
the drive for the shear drums, a swinging rocker
strip material eachhaving a cutting'blade there, 55 arm having a link connection with the crank.
on, means for rotating the shear drums. a rotanr
crank arm, a connection .between the rotating
crank arm and the shear drums, and means for
` frame and the oscillating arm, a connecting rod
adjusting the connection for _varying the speed
between the rocker arm and-the oscillating arm,
arm, an oscillating arm mounted for swinging
movement, a pitman connection between shear
of the reciprocating and rotating shear drums for 60 and means for adjusting the connecting rod for
adjusting the reciprocating shear frame andthe
various length cuts.
'
'
2.- In a rotary shear adapted to cut moving
strip material into lengths, a pair of cooperating
shear drums mounted for reciprocation with the
rotary shear drums to -synchronize their. speed
with the strip material for various length cuts. _'
8..A rotary oscillating'shear adapted to re
65 clprocate relative to a moving strip material to
' strip material each having a cutting blade there
on, means for rotating the shear drums, a crank
shear the material vinto lengths, comprising a
arm mounted adjacent to the shear drums, means
reciprocating shear frame, a pair of cooperating
for rotating the crank arm, a connection between
rotary shear drums each having a cutting blade
the rotating 'crank arm and the drive for the
thereon mounted in the shear frame, driving
rotating shear drums, a pivoted arm in the con 70 means for rotating the shear drums, a crank' arm
_nection betweenl the rotating crank arm and the
mounted'adiácent to the shear' frame rotated
means for rotating the _shear drums, and adjust
through’the drive fcr the rotary. shear drums
ing means on _the pivoted arm for varying the
for reciprocating the -shear frame, a connection
reciprocating speed of the rotating shear drums
between the crank arm and the shear frame, and
for various length cuts.
a In a rotary shear adapted for cutting con
‘
75 adjusting means in the connection for varying
2,410,555
the speed of the- reciprocating shear _frame to
'
synchronize the speed with the strip -material
'with the rotary shear drums for various length ‘
i
ld
andthe shear frame, a screw threaded shaft jour
naled in the oscillating arm, a nut on said screw
threaded shaft, a rod connecting the rocker arm
' 9_. A rotary oscillating shear adapted to> cut 5. and oscillating arm having its ends pivoted to
the nuts >on the screw threaded shafts, and means
moving strip material into lengths, comprisinga
for rotating the screw threaded shafts to adjust
reciprocating shear frame, a pair of cooperating
the nuts and rod connection to vary the speed
rotary shear drums each having a cutting blade
of the reciprocating shear frame and the rotary
thereon mounted-in the shear frame, a crank
arm mounted adjacent to the shear frame fro-. 10 shear drums to synchronize their speedl with the
strip material for various length cuts during the
tated through the drive for the shear drums, a
cutting operation.
~
Yswinging rocker armhaving pivoted- link con
13.,A rotary oscillating shear adapted to cut
nections between the crank arm and the recip
moving strip material- into lengths, comprising a
rocating shear frame, and means for adjusting
the pivoted link connections on the swinging 15' reciprocating shear frame, a pair of .cooperating
rotary shear drums each having a cutting blade '
rocker arm for varying the speed of the recip
thereon mounted in the shear frame, a crank arm
rocating shear frame and the rotary shear drums ’
mounted adjacent to the shear frame rotated
to synchronize the speed with the strip material
through .the drive for the shear drums, a con
for various length cuts.
,
.
nection between .the crank arm and the shear
10. A rotary oscillating shear adapted to cut
moving strip material into lengths, comprising, a 20 frame, and means for adjusting the .connection
between the crank arm and the shear frame .to
reciprocating shear frame, a pair of cooperating
vary the speed of the reciprocating shear frame
- rotary shear drums each having a cutting blade
and the rotating shear drums to synchronize their
thereon mounted in the'shear frame, a crank arm
speed with the strip material for various length
mounted adjacent to the shear frame rotated
' cuts duringithe cutting operation.
through the drive for the shear drums, a swing
14.
A
rotary
oscillating
shear
adapted
to cut
ing rocker arm between the shear frame and the
crank arm, la pivoted link connection between the
crank arm and the swinging rocker arm, a
threaded shaft journaled in the swinging rocker
moving strip material into lengths, comprising a
l reciprocating shear frame, a pair of cooperating
rotary shear drums each having a cutting blade
arm, a. nut on the threaded shaft, a rod having 30 thereon mounted in the shear frame, a crank arm
mounted adjacent to the shear frame vn_)tated
one end pivoted to the nut and its opposite end
through the drive for’the shear drums, a röcker‘
with a connection pivoted to the shear trame,
arm mounted for swinging movemenh’a link con#
and means for rotating the threaded shaft jour
nection between >the rocker arm and the crank
naled in the swinging arm for adjusting the nut
for Varying the speed of the reciprocating shear
frame and the rotating shear drums to synchro
nize the speed with the strip material for various
ment, a pitman connecting the oscillating arm
with the reciprocating shear frame having its
l1. A rotary oscillating shear adapted to cut 40 ends pivotally attached thereto, a connectingmrod
having its ends pivotally attached to the oscil
moving strip material into lengths, comprising a
reciprocating shear frame, a pair of cooperating ’ lating and rocker arms,v and means for adjust
ing the connecting rod between the oscillating
rotary shear drums each having a cutting blade
thereon mounted in the shear frame, a crank , and rocker arms to vary the speed of the re
ciprocting shear frame and the rotary shear
arm mounted adjacent to the shear frame ro
tated through the drive for the shear drums, a " drums to synchronize their speed .with the strip
material for various length cuts during the cut
pair of arms mounted for swinging movement
ting operation.
~
~
length cuts.
_
arm having its ends pivotally attached thereto,
_ Ian oscillating arm mounted for swinging move
`
and in spaced relation between the crank arm
and the .reciprocating shear frame, a link con
necting one oi' the swinging arms with .the crank 50
arm, a pitman connecting the other swinging arm
with the shear frame, a connecting rod between _ rotary shear drums each having a cutting blade
thereon mounted on
the swinging arms, and means for adjusting the
Ithe shear frame, ` a crankÍ
arm mounted adjacent to the shear frame rotated
connecting rod between the swinging arms' to
vary the speed of the reciprocating shear frame 55 through the drive for the shear drums, a rocker
arm mounted for swingingY movement having a
and the rotary drums to synchronize their speed
with the strip material for various length cuts ’ pivoted link connection to .the crank arm, a screw
during the cutting operation. ,
threaded shaft journaled in .the rocker arm, a nut
on the screw threaded shaft, an adjustable conf >
12. A rotary oscillating shear adapted to cut
moving strip material into lengths, comprising a
nection between.A the nut and the shear frame and
reciprocating shear frame, a pair of cooperating no pivotally attached thereto, and means for rotating
the screw .threaded shaft to adjust the nut and
rotary shear drums each having a, cutting blade
connection to the shear frame for varying the
thereon mounted in the shear frame, crank arms
speed of the reciprocating shear frame and the
mounted adjacent to the shear frame rotated
through the drive for the shear drums, a rocker 6 GI `rotary shear drums to synchronize .their speed
with the strip material for various length cuts
arm mounted for swinging movement having
trunnion extensions, link connections having
their ends pivotally attached to the trunnion ex
during the cutting operation.
16. A rotary oscillating shear adapted to cut
moving strip material into lengths, comprising a
tensions and the crank arms, a screw threaded
shaft journaled in the rocker arm, a nut on the 70 reciprocating shear frame, a .pair of cooperating
rotary shear drums each having a cutting blade
, screw threaded shaft, an oscillating arm mounted
for swinging movement between the -rocker arm
l and the shear frame having
trunnion extensions,
pitmans having their ends pivotally- attached to
_the trunnion extensions of the oscillating arm
thereon mounted in the shear frame, crank arms
mounted adjacent to the 'shear frame rotated
through the drive for the shear drums, a rocker
arm mounted for swinging movement having
trunnion gxtensions, link connections having their
,
l1
v ends pivotally attached
.
__
12
-
.
thereon mounted in. the shear frame, means for
to the trunnion'exten
rotating the shear drums, a crank arm mounted on
sions and the crank arms, a screw threaded shaft
the shear frame and movable therewith, means'
journaled in the rocker arm,- a nut on the screw - _driven by one of the shear drums for rotating _
threaded shaft, an oscillating arm mounted for
the’crank arm, a rod having one end pivoted to a
swinging movement between the rocker, arm and
fixed anchor and the opposite end pivoted to the
the shear frame having trunnion extensions,.pitrotating crank arm, and means for adjusting the
mans having their ends pivotally attached to the
relation’of the crank arm tou the shear blades to
trunnion extensions of the oscillating arm _and
synchronize the speed of the reciprocating shear
.the shear frame, a screw threaded shaft journaled
frame and the shear drums with'the speed of the
in the oscillating arm, a nut on said screw
strip for various length cuts.
threaded shaft, a rod connecting the rocker arm
' 20. A rotary oscillating shear adapted to cut
and the oscillating arm having its ends pivoted
moving
‘strip material into lengths, comprising a
to the nuts on the screw threaded shafts, and
reciprocating
shear frame, a pair of cooperating
electrically operated means for rotating the screw
rotary/shear drums, each having a cutting blade
threaded shafts simultaneously to adjustthe nuts
thereon mounted .in the shear frame, means for
and rod connection to vary the speed of the re
s rotating the shear drums, a. gear keyed to the end
ciprocating shear frame and the rotary shear
îof' the shaft of one of shear drums, a crank shaft
drums’to synchronize their .speed with the strip
>journaled inbearings on the shear frame, a gear
-material for various length cuts during the cut
ting operation.
_
y
A
_
20 of the same diameter as that on the drum shaft
17. A rotary oscillating shear adapted to cut
moving _strip material into lengths, comprising a
pair of reciprocating shear frames, a pairof co- »
secured to the crank shaft and meshing with and
driven by the gear on the drum shaft, a_worm
c wheel on the crank shaft adapted to rotate on the
crank shaft, a crank keyed to the worm wheel,
operating rotary shear drums mounted in each
reciprocating shear frame, a cutting blade on
each-shear drum, a crank arm mounted adjacent
to the shear frames adapted to be driven the _same
speed as the shear drums -to reciprocate the shear
bearings extending from the gear on the crank
shaft, a worm meshing with the worm Wheel hav
ing'its shaft journaled in the bearings, a rod .hav
ing one end pivoted to a fixed anchor and the op
posite end- pivoted to the rotating crank arm, a`
. frames; a rocker arm mounted for swinging move
scale on the gear on the crank shaft for indicating
ment between- the crank arm and the reciprocat so the
cut desired, and means for rotating the worm
ing shear frame, a pitman having its ends piv
`to rotate the worm wheel and crank in relation to
oted to _the crank arm Iand the rocker arm,_ a
on the crank shaft.
screw threaded shaft iournaled in the rocker arm,~ I the>21.gear
A rotary oscillating shear adapted to cut
a nut onthe screw threaded shaft, 4a connecting
moving strip material into lengths, comprising a
rod having one end pivoted to the nut and .the
reciprocating shear frame, a pair of cooperating
opposite end pivotally connected to one >of the re->
rotary shear drums each having a cutting blade
ciprocating shear frames, and means forrotating
thereon mounted in the shear frame, means for
the' screw threaded shaft to adjust .the nut and
rotating the shear drums, a crank arm mounted y
end of the connecting rod for varying the -speed
for rotation adjacent to the shear drums,‘means
of the reciprocating shear frame and the knife
as
speeds for the rotaryshear drums to synchronize ` _ for rotating the crank arm through the drive for
the shear drums to reciprocate the shear frame,
the speed of the shear drums with the speed of
and means for adjusting the angularity of the
y
crank arm in relation to the cutting blades for
18. A rotary oscillating shear adapted to cut
length cuts.
moving strip material into lengths, comprising a 45 different
22. A rotary oscillating shear adapted to cut
pair vof.’ coacting reciprocating shear frames,
moving strip, material into lengths, comprising a
means for adjusting the shear frames in spaced
' reciprocating shear frame, upper and lower coop
relation to each other, a pair of cooperating ro
erating rotary shear drums each having a cutting
the strip for various length cuts.
' »tary shear drums mounted in each reciprocating
shear frame, a cutting blade on each‘ shear drum, 50 blade thereon mounted in the shear frame, means
the cutting'blades in one pair of shear drums
adapted to be mounted in one shear frame ap
for rotating the shear drums, a crank shaft jour
naled in bearings on the shear frame, a crank arm
mounted on the crank shaft, a rod having one end
proximately 5° aheadl of the shear blades in the
to a -fixed anchor and the opposite end
shear drums in the adjacent shear frame, a, crank '55. pivoted
pivoted to the crank arm, means for rotating the
arm mounted adjacent to the .shear _frames
crank arm the same number of revolutionsas the
adapted to -be driven the same speed as the shear
lower shear drum, and means for adjusting the
drums to reciprocate the shear frames, a rocker
angularity of the crank arm in relation to the
arm mounted for swinging movement between
bladesfor various length cuts.
4
the crank arm and the reciprocating shear frame, 60 shear
23. .A rotary oscillating shear adapted to cut
a pitman having its ends pivoted to the crank arm
moving strip material into lengths, comprising a
' and rocker arm, a screw threaded shaft journaled
reciprocating shear frame, upper and lower coop
in the rocker arm, a nutson the screw threaded
shaft, aconnecting rod having one end pivoted to " erating rotary shear drums each having a, cutting
thereon mounted in the shear frame, means
the nut and the opposite end pivotally connected 65 blade
for rotating the shear drums, a crank shaft jour
to one of the reciprocating shear frames, c and
means for rotating the screw threaded shaft to
naled in bearings on the shear frame, a crank arm
mounted on the crank shaft, a gear secured to the
adjust the n_ut and end of the connecting rod for
iower shear drum meshing with a gear of the
varying the speed of the reciprocating shear frame
same diameter keyed to the crank shaft, a scale
and the knife speeds for the rotary shear drums
to synchronize .the "speed of the Vshear drums 70 on the gear keyed to the crank shaft, a worm
wheel provided with a pointer mounted for rota,
, with the speed of the strip for various length cuts.
tion with the crank arm on the crank shaft, a rod
A19. A rotary _oscillatingshear adapted to cut
having one end pivoted to a fixed anchor and the
moving strip material into lengths, comprising a
opposite end pivoted to the' crank arm, and means
reciprocating shear frame, a pair of cooperating
rotary shear drums each having a cutting blade .75 for adjusting the crank arm and worm wheel s0
2,410,555
the pointer will register with the scale on the gear
wheel mounted on the crank shaft for the length
of cut desired.
. Y
24. A rotary oscillating shear adapted to cut
moving strip material 'into lengths, comprising a
reciprocating vshear frame, upper and lower coop
erating rotary shear drums each having a cutting
.blade thereon mounted in the shear frame, means
for rotating the shear drums, a, crank shaft jour
naled in bearings on the shear frame, a crank arm
mounted on the crank shaft, a gear’ secured to
\ the lower shear drum meshing with a gear of the
same diameter keyed to the :crank shaft, a scale
-on the gear ,keyed to the crank shaft, a worm
.
14
_,
wheel provided withna pointer mounted for rota
tion with ‘thescrank arm on the crank shaft, `a
rod having one end pivoted to a ñxed anchor and
the opposite end pivoted to _the crank arm, jour
nal bearings extending from the side of the gear
mounted on the crank shaft, a' worm meshing with
the worm wheel having its shaft journaled in the
bearings extending from the side ofthe gear
mounted on the crank shaft, and means for ro
tating the wormyfor adjusting the crank arm and
worm wheel so the pointer will register with the
' scale on Vthevgear wheel mounted on the crank
shaft for the length of cut desired.
-
RICHARD H. STEVENS.
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